unit 7: sympathetics, autonomic plexuses Flashcards
the autonomic plexuses are primarily concerned w/ supply of visceral structures in the __ and __ cavities
thoracic
abdominopelvic
within the autonomic plexus there are pre and post ganglionic ___ and ___, as well as somatic and visceral ____ fiber types
parasympathetics
sympathetics
afferent
four thoracic plexuses
esophageal
thoracic aortic
pulmonary
cardiac
main contribution to the esophageal plexus is from the vagus and __ __ that synapse on POSTganglionic cells in the wall of esophagus
recurrent laryngeal
sympathetic contrib to the esophageal plexus is from the greater splanchnic nerves, arising from the - or _ ganglia
T5-T9 or T10
the ___ nerve has sensory and visceral afferent input to the thoracic aortic plexus
vagus
- the __ __ nerve lends preganglionic sympathetic input to the thoracic aortic plexus
- __-__ sympathetic ganglia lend postganglionic vascular input
greater splanchnic
T1-T5
___ are the primary component of the pulmonary plexus, and arrive there via the anterior and posterior ___ branches of the VAGUS nerve
-those preganglionic fibers synapse w/ postganglionic fibers synapse w/ postganglionic in the wall of __ __
parasympathetics
bronchial
bronchial vessels
PARA stim of pulmonary plexus results in __ and increased activity of ___ ___
bronchoconstriction
bronchial glands
sympathetic fibers for the pulmonary plexus are from the - ganglia, and supply the pleura, bronchial glands and musculature
T2-T4
the cardiac plexus supplies the ___, the great vessels at the __ of the heart, and the coronary arteries
myocardium
base
PARA info arrives to the cardiac plexus via the sup and inf cardiac nerve off the vagus, and their influence causes ___ HR and ___ of coronary arteries
decreased
constriction
sympatetic arrive from sup, middle, inf cardiac nerves and from T2-4 symp ganglia to result in __ HR and ___ of coronary vessels
increased
dilation
largest prevertebral plexus, which begins at L1 vertebra level
celiac
celiac plexus is dense and gangliated that forms a network around the __ __ and its branches down to and including the common iliac and median sacral arteries
abdominal aorta
three pairs of well defined ganglia associated w/ celiac plexus
-each is assoc w/ a similarly named artery
celiac ganglia
superior mesenteric ganglia
aorticorenal ganglia
a ___ plexus is associated with the celiac plexus and are named for the arteries associated w/ each one (see notes i-xii)
secondary
the __ __ plexus is part of the celiac plexus bt L4-S1 levels, and includes the abdominal aortic and inferior mesenteric plexuses
superior hypogastric
__ __ plexus includes celiac plexus BELOW the internal iliac artery
-is SECOND largest prevertebral plexus
inferior hypogastric
the inferior hypogastric plexus is associated with these 4 secondary plexuses
vesicle (bladder)
prostatic or uterine/vaginal
rectal
cavernous
defecation and micturition are initiated by ___ input
parasympathetic
__ ___ are sensitive to wall stretching of bladder or rectum (stretch reflex)
visceral afferents
in defecation/micturition, EFFERENT response travels out of __ __ nerves to detrusor muscle and/or rectal musculature
- external sphnicter muscles are relaxed
- sympathetic stim has opp effect
pelvic splanchnic
